Re: What is the meaning of Interstellar ?

Tue Jan 08, 2019 3:57 pm

The interstellar medium provides yet another illustration of convergent phenomena that occur at a cosmic level.

Tue Jan 08, 2019 3:58 pm

Usually this occurs when amolecule becomes ionized,

Tue Jan 08, 2019 3:58 pm

often as the result of an interaction with a cosmic ray.

Tue Jan 08, 2019 3:58 pm

According to the current understanding of physics, an object within space-time cannot exceed the speed of light,

Tue Jan 08, 2019 3:58 pm

which means an attempt to travel to any other galaxy would be a journey of millions of earth years via conventional flight.

Tue Jan 08, 2019 3:58 pm

Time dilation. Assuming faster-than-light travel is impossible,

Tue Jan 08, 2019 3:59 pm

one might conclude that a human can never make a round-trip farther from Earth than 20 light years if the traveler is active between the ages of 20 and 60.

Tue Jan 08, 2019 3:59 pm

The star ahead seems to be approaching at a speed of 0.87 light years per ship-year.

Tue Jan 08, 2019 4:00 pm

The journey to Alpha Centauri B orbit would take about 100 years,

Tue Jan 08, 2019 4:00 pm

at an average velocity of approximately 13,411 km/s (about 4.5% the speed of light) and another4.39 years would be necessary for the data to reach Earth.

Tue Jan 08, 2019 4:00 pm

at an average velocity of approximately 13,411 km/s (about 4.5% the speed of light) and years would be necessary for the data to reach Earth.